Distribution techniques - The WDT a great way to take an average grinder and get out a great shot

October 01, 2011

The WDT is short for the Weiss Distribution Technique.  It was invented by John Weiss and at first seems a little silly, but you cannot argue with the results.  There is a reason that hundreds or perhaps even thousands of people across the country use this technique many times a day.  For that matter google alone turns up 190,000 hits on this technique!  On the other hand, I will point out that it is a technique that you will not need if you have high enough end equipment.  It is not necessary for a grinder on a level of a Super Jolly or Vario and clearly not necessary on a big conical grinder – although even this depends partially on the grinder and partially on the barista so you will find some people with these grinders who still use it and some who do not.  (John Weiss himself does not use it anymore since he upgraded his grinder long ago).


The idea is that you dose your coffee into a portafilter and then you stir it with a needle until you have broken up any clumps and created a nice, fluffy, evenly distributed bed of coffee.


Most people are like me and cannot do this technique without making a mess or having some kind of aid so they chop the bottom out of yogurt containers and use those as homemade funnels to eliminate the mess.  Other people are much classier and order custom made funnels from Orphan Espresso at

http://www.orphanespresso.com/OE-IPANEMA-Tall-Aluminum-Portafilter-Dosin...


or for the cheaper one

http://www.orphanespresso.com/Wide-Mouth-Stainless-Dosing-Funnel_p_4064....


Here is a link to someone giving basic instructions on Youtube for the WDT

http://www.youtube.com/watch?v=II8v2eEJlRY


and a link to a fantastic looking shot of espresso on youtube created using the WDT (this is what some would call “espresso porn”

http://www.youtube.com/watch?v=NZDTnLnCRk4


Here is a link to the original article written by John Weiss himself…

http://www.google.com/search?q=wdt+funnel&ie=utf-8&oe=utf-8&aq=t&rls=org...


Finally, I will point out that there are potential disadvantages.  Some speculate that the small fines in a basket should be evenly distributed and this technique can result in “fines migration” where the small fines end up at the bottom more than the top.  On this front some argue that you should stir, but not vigorously.

Leave a comment

Comments will be approved before showing up.


Also in The Reading Room

5 Simple Steps To Maintain and Clean Your Baratza Encore Grinder
5 Simple Steps To Maintain and Clean Your Baratza Encore Grinder

October 26, 2017

Read More
Your Ultimate Coffee Glossary: A Helpful List of Terms
Your Ultimate Coffee Glossary: A Helpful List of Terms

September 27, 2017

Here are some common terms you’re likely to run into whether you’re fresh on the coffee scene or just dabbling in a new area of interest.
Read More
3 Women Pioneers in the Coffee Roasting Business
3 Women Pioneers in the Coffee Roasting Business

August 02, 2017

Read More

GET 10% OFF YOUR FIRST ORDER